swivelling ring

例句：

1. 1. The engineer designed a swivelling ring that could adjust the angle of the arm.
   工程师设计了一个可以调整手臂角度的万向节。
2. 2.The swivelling ring made it easy for the team to move around the room.
   这个万向节让团队在房间里移动时变得容易。
3. 3. The swivelling ring was a crucial component in the construction of the bridge.
   这个万向节是桥梁建造中至关重要的一个部件。